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Related Experiment Video

Updated: Sep 20, 2025

Reverse Total Shoulder Arthroplasty
10:10

Reverse Total Shoulder Arthroplasty

Published on: July 5, 2011

43.4K

Patient-specific Instrumentation Versus Standard Surgical Instruments in Primary Reverse Total Shoulder Arthroplasty:

Ahmed A Elsheikh1, Mohamed S Galhoum2,3, Mohamed A Mokhtar4,5

  • 1Benha University, Benha, Kalyobiya, Egypt.

Journal of Shoulder and Elbow Arthroplasty
|June 7, 2022
PubMed
Summary

Patient-specific instrumentation (PSI) did not show significantly better clinical outcomes than standard methods in primary reverse total shoulder arthroplasty. However, PSI did not negatively impact surgical or waiting times.

Keywords:
glenoid positioninglooseningnotchingpatient-specific guidepatient-specific instrumentationreverse total shoulder arthroplasty

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Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering
  • Arthroplasty Research

Background:

  • Patient-specific instrumentation (PSI) has shown promise in improving glenoid positioning during shoulder arthroplasty.
  • Previous studies focused on radiological outcomes, with limited data on clinical outcomes for PSI in reverse total shoulder arthroplasty (RSTA).

Purpose of the Study:

  • To compare the clinical outcomes of primary reverse total shoulder arthroplasty (RSTA) utilizing patient-specific instrumentation (PSI) versus standard surgical methods.
  • To evaluate the impact of PSI on surgical time, waiting time, and radiological parameters in RSTA.

Main Methods:

  • A retrospective review of 53 patients undergoing primary RSTA (35 standard, 18 PSI) with a minimum 24-month follow-up.
  • Comparison of pre-operative and post-operative clinical outcome scores and radiological assessments between the two groups.
  • Analysis of surgical duration and patient waiting times for both PSI and standard RSTA procedures.

Main Results:

  • Both standard and PSI groups demonstrated significant overall post-operative improvement (P<0.05).
  • No statistically significant differences in any post-operative clinical outcomes were observed between the PSI and standard RSTA groups.
  • PSI did not significantly increase waiting time (P=0.693) or intraoperative time (P=0.962).

Conclusions:

  • Patient-specific instrumentation (PSI) did not yield significantly superior clinical outcomes compared to standard methods in primary reverse total shoulder arthroplasty.
  • Despite comparable clinical results, PSI demonstrated a higher percentage of optimal baseplate positioning and screw anchorage radiologically.
  • PSI is a viable option for primary RSTA, as it does not negatively affect surgical efficiency or patient waiting times.